Knight Transportation, Inc. (NYSE: KNX) expects to release its 2012
fourth quarter earnings on Wednesday, January 30, 2013, after the close
of the market. Knight will be holding a live conference call with
analysts and investors to discuss the earnings release, the results of
operations, and other matters shortly after its earnings press release
on Wednesday, January 30, 2013, at 4:30 pm EST. (Please note that, since
the call will begin promptly as scheduled, you will need to join a few
minutes prior to that time.) Slides to accompany this call will be
posted on the company’s website and will be available to download just
prior to the scheduled conference call. To view the presentation, please
visit http://investor.knighttrans.com/events,
''Fourth Quarter 2012 Conference Call Presentation.''

The public will be able to listen and participate in the conference
telephonically by dialing (855) 733-9163. An audio replay of the
conference will be posted on the Company’s website for at least seven
(7) days after the meeting (www.knighttrans.com/shareholders/audio).

The Company assumes no responsibility to update any information posted
on its web site.

The conference may contain forward-looking statements made by the
Company that involve risks, assumptions and uncertainties that are
difficult to predict. Investors are directed to the information
contained in Item 7A (''Quantitative and
Qualitative Disclosures About MarketRisk'') of Part
II of the Company’s Annual Report on Form 10-K, filed with the U.S.
Securities and Exchange Commission, for a discussion of the risks that
may affect the Company’s future operating results. Actual results may
differ.